I lost my tuition money due to scam

Hi my name is Clare and I'm desperately in need of your help. 3months a go I got a business proposal from a college mate. He promised that if I invest in his business I will earn so much that I won't need to work part time anymore since my earnings will be enough to cover my tuition money and bills. I really had high hopes for this because I wanted to quit my job and focus on my studies since I'm a graduating student. I gave him all my savings, weeks have past and I have not heard anything from him. It was through a common friend that I found out that he left town already. I've been working my ass off but still I am short by $700 (US). I'm begging all of you please help me. I promise to help those in this site once I get back on my feet. Please. Thank you.